NHTSA ID Number: 11020680
Manufacturer Communication Number: PIT6393A
TSB/Document Date: 2025-07-14
Summary
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it. It also informs them to follow the bulletins as necessary to USB update the modules.
United States
Additional Options (RPO)
IVD or IVE
Condition
A customer may comment they are having issues with their infotainment system. This
may include any of the symptoms described below
Cause
Concerns may be software, connection, or hardware.
Correction
1. Step 1: For a blank or black cluster and radio display, refer to SI diagnostics. For a blank/black radio display only,
refer to PIC6540 and perform a reset on the radio to see if display returns. If the display returns continue to step 2. If
display does not return, follow normal SI diagnostics. If SI diagnostics refers you to replacing the radio please
proceed to step 1.1.
Step 1.1 If concern is still present and a new radio is needed, these radios are currently restricted through the
Electronic Service Center (ESC). Please contact your preferred ESC to order the new radio. The ESC will require a
response to the attestation question before authorization will be provided. Attestation question: Have you followed ,
reset the module, installed the latest software, disconnect and reconnect, and that the radio still requires a
replacement?
Attestation question: Have you followed PIT6393, and require a radio replacement?
Step 2: If customer concern is related to one of the symptoms below, verify customers radio is at the latest software
version refer to bulletin in table below
-
· Phone Projection/ Bluetooth/ Connectivity
-
· Audio
Condition A customer may comment they are having issues with their infotainment system.
This may include any of the symptoms described below
Cause Concerns may be, software, connection, or hardware.
-
Camera display
-
Cluster
-
Radio Display
-
HVAC controls
Step 3. If concerns continue disconnect, inspect, and reconnect all related connections, clear any codes and recheck
for concern.
Step 4. If the radio is not fixed with the latest software or reset, please inform the customer that GM is working on
several software improvements aimed at resolving current issues and improving overall functionality. Where
practical, dealers should encourage customers to wait until updated software becomes available and please do not
replace the radio, amplifier, speakers, radio display, Instrument panel display, or the Heads-up display.
Model Year
Brand
Model
Latest Software Bulletin
2024
Bright Drop
Zevo 400/600
24-NA-092
2024
Envision
24-NA-193
2024
LYRIQ
24-NA-193
2024
XT4
24-NA-193
2024
Blazer EV
24-NA-193
2024
Equinox EV
24-NA-193
2024
Silverado EV WT/RST
24-NA-193
2024
Traverse/Acadia
24-NA-193
2024
Canyon/Colorado
24-NA-193
Bulletin No.: PIT6393A
July, 2025
Page 3
Model Year
Brand
Model
Latest Software Bulletin
2024
Sierra Denali EV
24-NA-193
2024
Enclave
25-NA-021
2024
Envision
25-NA-021
2025
CT5
24-NA-193
2025
CT5 V and Blackwing only
Latest software
2025
Escalade IQ
25-NA-085
2025
Escalade/Escalade ESV
25-NA-183
2025
LYRIQ
Latest software
2025
OPTIQ
25-NA-085
2025
VISTIQ
Latest software
2025
XT4
24-NA-193
2025
Blazer EV except SS
24-NA-193
2025
Blazer EV SS Only
Latest software
2025
Bright Drop
Zevo 400/600
24-NA-193
2025
Equinox
25-NA-183
2025
Equinox EV
24-NA-193
2025
Silverado EV WT
Latest software
2025
Silverado ESV RST
24-NA-193
2025
Tahoe/Suburban
25-NA-183
2025
Traverse
25-NA-021
2025
Canyon/Colorado
25-NA-085
2025
Acadia
25-NA-183
2025
Sierra Denali EV
24-NA-193
2025
Terrain
25-NA-183
2025
Yukon/Yukon XL
25-NA-183
2026
Equinox
Latest software
2026
Terrain
Latest software
Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following
labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
Labor
Operation
Description
Labor Time
2810335
Radio Reprogramming with Use
SPS
Published
Labor Time
*3480578
Disconnect and reconnect
Radio module
1.8 Hr.
3420840
Radio Replacement
Use
Published
Labor Time
*This is a unique Labor Operation for Bulletin use only.
Page 4
July, 2025
Bulletin No.: PIT6393A
Version
2
Modified
06/16/2025 - Created On.
07/01/2025 - Updated to add ESC's in Correction and bulletin section, updated models.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job
properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
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TSB/Document ID: PIT6393A
Replacement Service Bulletin Number:
MFR Communication Date: 2025-07-02
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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